/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:47:34,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:47:34,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:47:34,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:47:34,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:47:34,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:47:34,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:47:34,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:47:34,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:47:34,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:47:34,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:47:34,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:47:34,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:47:34,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:47:34,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:47:34,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:47:34,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:47:34,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:47:34,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:47:34,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:47:34,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:47:34,140 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:47:34,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:47:34,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:47:34,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:47:34,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:47:34,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:47:34,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:47:34,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:47:34,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:47:34,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:47:34,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:47:34,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:47:34,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:47:34,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:47:34,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:47:34,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:47:34,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:47:34,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:47:34,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:47:34,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:47:34,160 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:47:34,207 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:47:34,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:47:34,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:47:34,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:47:34,211 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:47:34,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:47:34,211 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:47:34,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:47:34,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:47:34,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:47:34,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:47:34,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:47:34,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:47:34,213 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:47:34,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:47:34,213 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:47:34,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:47:34,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:47:34,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:47:34,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:47:34,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:47:34,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:47:34,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:47:34,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:47:34,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:47:34,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:47:34,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:47:34,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:47:34,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:47:34,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:47:34,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:47:34,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:47:34,728 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:47:34,730 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:47:34,730 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:47:34,732 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 05:47:34,830 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e12cecf3/608a5858280c4a0d9c3f765284bcc97d/FLAG4268114fc [2020-09-25 05:47:35,617 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:47:35,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 05:47:35,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e12cecf3/608a5858280c4a0d9c3f765284bcc97d/FLAG4268114fc [2020-09-25 05:47:35,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e12cecf3/608a5858280c4a0d9c3f765284bcc97d [2020-09-25 05:47:35,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:47:35,750 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:47:35,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:47:35,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:47:35,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:47:35,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:47:35" (1/1) ... [2020-09-25 05:47:35,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46a9d3e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:47:35, skipping insertion in model container [2020-09-25 05:47:35,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:47:35" (1/1) ... [2020-09-25 05:47:35,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:47:35,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:47:37,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:47:37,938 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:47:39,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:47:39,265 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:47:39,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:47:39 WrapperNode [2020-09-25 05:47:39,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:47:39,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:47:39,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:47:39,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:47:39,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:47:39" (1/1) ... [2020-09-25 05:47:39,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:47:39" (1/1) ... [2020-09-25 05:47:39,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:47:39" (1/1) ... [2020-09-25 05:47:39,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:47:39" (1/1) ... [2020-09-25 05:47:39,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:47:39" (1/1) ... [2020-09-25 05:47:39,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:47:39" (1/1) ... [2020-09-25 05:47:39,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:47:39" (1/1) ... [2020-09-25 05:47:39,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:47:39,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:47:39,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:47:39,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:47:39,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:47:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:47:39,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:47:39,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:47:39,601 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 05:47:39,601 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:47:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:47:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 05:47:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-25 05:47:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 05:47:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 05:47:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 05:47:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 05:47:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 05:47:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 05:47:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 05:47:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 05:47:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 05:47:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-25 05:47:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-09-25 05:47:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 05:47:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 05:47:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:47:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:47:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:47:45,036 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:47:45,036 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 05:47:45,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:47:45 BoogieIcfgContainer [2020-09-25 05:47:45,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:47:45,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:47:45,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:47:45,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:47:45,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:47:35" (1/3) ... [2020-09-25 05:47:45,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d157660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:47:45, skipping insertion in model container [2020-09-25 05:47:45,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:47:39" (2/3) ... [2020-09-25 05:47:45,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d157660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:47:45, skipping insertion in model container [2020-09-25 05:47:45,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:47:45" (3/3) ... [2020-09-25 05:47:45,068 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 05:47:45,086 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:47:45,103 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-09-25 05:47:45,136 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-25 05:47:45,192 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:47:45,192 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:47:45,192 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:47:45,193 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:47:45,193 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:47:45,193 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:47:45,193 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:47:45,193 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:47:45,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states. [2020-09-25 05:47:45,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1420 [2020-09-25 05:47:45,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:47:45,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:47:45,378 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:47:45,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:47:45,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1703469692, now seen corresponding path program 1 times [2020-09-25 05:47:45,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:47:45,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561910394] [2020-09-25 05:47:45,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:47:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:47:49,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:47:51,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:47:52,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:47:52,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:47:53,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:47:53,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1426 [2020-09-25 05:47:53,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:47:53,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5217 [2020-09-25 05:47:53,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:47:53,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:47:53,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:47:53,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 436 [2020-09-25 05:47:53,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 542 [2020-09-25 05:47:53,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:47:55,314 WARN L193 SmtUtils]: Spent 876.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-09-25 05:47:55,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:47:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:47:55,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:47:55,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:47:55,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 05:47:55,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:47:55,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 05:47:55,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:47:55,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:47:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:47:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:47:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:47:55,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:47:58,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:47:58,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561910394] [2020-09-25 05:47:58,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:47:58,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:47:58,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128455622] [2020-09-25 05:47:58,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:47:58,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:47:58,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:47:58,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:47:58,764 INFO L87 Difference]: Start difference. First operand 3655 states. Second operand 5 states.